Title :
A 62 dB dynamic range sixth-order band pass filter with 100-175 MHz tuning range
Author :
Aldea, C. ; Celma, S. ; Otín, A.
Author_Institution :
Grupo de Diseno Electroniko, Univ. de Zaragoza, Zaragosa, Spain
Abstract :
In this paper we report a tunable MOST-only resonator circuit based on pseudo-differential continuous time transconductors for applications in low-voltage systems over HF range. By using a 0.8/spl mu/ pure digital CMOS process, a prototype 6th-order 175 MHz band pass filter with a side-band rejection lower than -80 dB confirms the feasibility of the proposed resonator in very-high frequency applications such as IF band pass sections of RF front-end circuits. The filter consumes less than 55 mW from a 2.5 V supply. The measured dynamic range was 62 dB at IM3 of 0.5%. The active area is 0.35 mm/sup 2/.
Keywords :
CMOS digital integrated circuits; UHF filters; UHF integrated circuits; band-pass filters; circuit tuning; resonator filters; resonators; HF range; low-voltage systems; pseudodifferential continuous time transconductors; pure digital CMOS process; resonator circuit based; side-band rejection; sixth-order band pass filter; tunable MOST; tuning range; Band pass filters; CMOS process; Circuit optimization; Dynamic range; Hafnium; Prototypes; Radio frequency; Resonant frequency; Transconductors; Tunable circuits and devices;
Conference_Titel :
Solid-State Circuits Conference, 2003. ESSCIRC '03. Proceedings of the 29th European
Conference_Location :
Estoril, Portugal
Print_ISBN :
0-7803-7995-0
DOI :
10.1109/ESSCIRC.2003.1257166
